AIX环境文件系统迁移到ASM存储

AIX环境文件系统迁移到ASM存储

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系统环境：

操作系统：AIX5.3-08

Oracle：  Oracle 10gR2

一、构建ASM 存储环境

http://tiany.blog.51cto.com/513694/1418564

Oracle DataBase单实例使用ASM案例(4)--AIX系统Oracle 10g应用

二、迁移文件系统到ASM

1、查看ASM Instance

[oracle@aix211 ~]$export ORACLE_SID=+ASM

[oracle@aix211 ~]$!sql

sqlplus '/as sysdba'

SQL*Plus: Release 10.2.0.1.0 - Production on Thu May 29 17:23:24 2014

Copyright (c) 1982, 2005, Oracle.  All rights reserved.

Connected to an idle instance.

SQL> startup

ASM instance started

Total System Global Area  130023424 bytes

Fixed Size                  2019136 bytes

Variable Size             102838464 bytes

ASM Cache                  25165824 bytes

ASM diskgroups mounted

SQL> select name ,state from v$asm_diskgroup;

NAME                           STATE

------------------------------ -----------

DG1                            MOUNTED

RCY1                           MOUNTED

SQL> 

2、修改实例参数

SQL> alter system set db_create_file_dest ='+dg1' scope=spfile;

System altered.

SQL> show parameter control

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

control_file_record_keep_time        integer     7

control_files                        string      /u01/app/oracle/oradata/prod/c

                                                 ontrol01.ctl, /dsk1/oradata/pr

                                                 od/control02.ctl

SQL> alter system set control_files='+dg1' scope=spfile;

System altered.

3、转储控制文件到控制文件

RMAN> shutdown immediate;

database closed

database dismounted

Oracle instance shut down

RMAN> startup nomount;

connected to target database (not started)

Oracle instance started

Total System Global Area    1258291200 bytes

Fixed Size                     2020552 bytes

Variable Size                318769976 bytes

Database Buffers             922746880 bytes

Redo Buffers                  14753792 bytes

RMAN> restore controlfile from '/u01/app/oracle/oradata/prod/control01.ctl';

Starting restore at 29-MAY-14

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=156 devtype=DISK

channel ORA_DISK_1: copied control file copy

output filename=+DG1/prod/controlfile/backup.256.848857069

Finished restore at 29-MAY-14

4、转储数据文件到ASM磁盘组

RMAN> alter database mount;

database mounted

released channel: ORA_DISK_1

RMAN> backup as copy database format '+dg1';

Starting backup at 29-MAY-14

allocated channel: ORA_DISK_1

channel ORA_DISK_1: sid=156 devtype=DISK

channel ORA_DISK_1: starting datafile copy

input datafile fno=00001 name=/u01/app/oracle/oradata/prod/system01.dbf

output filename=+DG1/prod/datafile/system.257.848857161 tag=TAG20140529T173920 recid=12 stamp=848857281

channel ORA_DISK_1: datafile copy complete, elapsed time: 00:02:05

channel ORA_DISK_1: starting datafile copy

input datafile fno=00003 name=/u01/app/oracle/oradata/prod/sysaux01.dbf

output filename=+DG1/prod/datafile/sysaux.258.848857287 tag=TAG20140529T173920 recid=13 stamp=848857355

channel ORA_DISK_1: datafile copy complete, elapsed time: 00:01:15

channel ORA_DISK_1: starting datafile copy

input datafile fno=00005 name=/u01/app/oracle/oradata/prod/example01.dbf

output filename=+DG1/prod/datafile/example.259.848857363 tag=TAG20140529T173920 recid=14 stamp=848857404

channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:45

channel ORA_DISK_1: starting datafile copy

input datafile fno=00002 name=/u01/app/oracle/oradata/prod/undotbs01.dbf

output filename=+DG1/prod/datafile/undotbs1.260.848857407 tag=TAG20140529T173920 recid=15 stamp=848857434

channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:35

channel ORA_DISK_1: starting datafile copy

input datafile fno=00004 name=/u01/app/oracle/oradata/prod/users01.dbf

output filename=+DG1/prod/datafile/users.261.848857443 tag=TAG20140529T173920 recid=16 stamp=848857457

channel ORA_DISK_1: datafile copy complete, elapsed time: 00:00:25

Finished backup at 29-MAY-14

Starting Control File and SPFILE Autobackup at 29-MAY-14

piece handle=/backup/c-259825570-20140529-01 comment=NONE

Finished Control File and SPFILE Autobackup at 29-MAY-14

RMAN> switch database to copy;

datafile 1 switched to datafile copy "+DG1/prod/datafile/system.257.848857161"

datafile 2 switched to datafile copy "+DG1/prod/datafile/undotbs1.260.848857407"

datafile 3 switched to datafile copy "+DG1/prod/datafile/sysaux.258.848857287"

datafile 4 switched to datafile copy "+DG1/prod/datafile/users.261.848857443"

datafile 5 switched to datafile copy "+DG1/prod/datafile/example.259.848857363"

5、恢复数据库

RMAN> recover database;

Starting recover at 29-MAY-14

using channel ORA_DISK_1

starting media recovery

media recovery complete, elapsed time: 00:00:00

Finished recover at 29-MAY-14

RMAN> alter database open;

database opened

6、迁移临时表空间

SQL> select name from v$datafile;

NAME

--------------------------------------------------------------------------------

+DG1/prod/datafile/system.257.848857161

+DG1/prod/datafile/undotbs1.260.848857407

+DG1/prod/datafile/sysaux.258.848857287

+DG1/prod/datafile/users.261.848857443

+DG1/prod/datafile/example.259.848857363

SQL> select name from v$tempfile;

NAME

--------------------------------------------------------------------------------

/u01/app/oracle/oradata/prod/temp01.dbf

SQL> alter tablespace temp add tempfile '+dg1';

Tablespace altered.

SQL> select name from v$tempfile;

NAME

--------------------------------------------------------------------------------

/u01/app/oracle/oradata/prod/temp01.dbf

+DG1/prod/tempfile/temp.262.848858041

SQL> alter tablespace temp drop tempfile '/u01/app/oracle/oradata/prod/temp01.dbf';

Tablespace altered.

SQL> select name from v$tempfile;

NAME

--------------------------------------------------------------------------------

+DG1/prod/tempfile/temp.262.848858041

7、迁移redo日志组

SQL> set linesize 120

SQL> select * from v$log

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIM

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------

         1          1        114   52428800          2 YES INACTIVE                989355 29-MAY-14

         2          1        115   52428800          2 YES INACTIVE                989368 29-MAY-14

         3          1        113   52428800          2 YES INACTIVE                988986 29-MAY-14

         4          1        116   52428800          2 NO  CURRENT                 989387 29-MAY-14

SQL> col member for a50

SQL> select group#,member from v$logfile;

    GROUP# MEMBER

---------- --------------------------------------------------

         3 /dsk1/oradata/prod/redo03a.log

         2 /dsk1/oradata/prod/redo02a.log

         1 /dsk1/oradata/prod/redo01a.log

         1 /dsk2/oradata/prod/redo01b.log

         2 /dsk2/oradata/prod/redo02b.log

         3 /dsk2/oradata/prod/redo03b.log

         4 /dsk1/oradata/prod/redo04a.log

         4 /dsk2/oradata/prod/redo04b.log

8 rows selected.

添加新的日志组到ASM diskgroup：

SQL> alter database add logfile  

  2  ('+dg1','+rcy1') size 10m;

SQL> alter database add logfile

  2  ('+dg1','+rcy1') size 10m;

SQL> select * from v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIM

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------

         1          1        114   52428800          2 YES INACTIVE                989355 29-MAY-14

         2          1        115   52428800          2 YES INACTIVE                989368 29-MAY-14

         3          1        113   52428800          2 YES INACTIVE                988986 29-MAY-14

         4          1        116   52428800          2 NO  CURRENT                 989387 29-MAY-14

         5          1          0   10485760          2 YES UNUSED                       0

         6          1          0   10485760          2 YES UNUSED                       0

6 rows selected.

SQL> select group#,member from v$logfile order by 1;

    GROUP# MEMBER

---------- --------------------------------------------------

         1 /dsk1/oradata/prod/redo01a.log

         1 /dsk2/oradata/prod/redo01b.log

         2 /dsk1/oradata/prod/redo02a.log

         2 /dsk2/oradata/prod/redo02b.log

         3 /dsk1/oradata/prod/redo03a.log

         3 /dsk2/oradata/prod/redo03b.log

         4 /dsk1/oradata/prod/redo04a.log

         4 /dsk2/oradata/prod/redo04b.log

         5 +RCY1/prod/onlinelog/group_5.256.848858217

         5 +DG1/prod/onlinelog/group_5.263.848858213

         6 +RCY1/prod/onlinelog/group_6.257.848858259

    GROUP# MEMBER

---------- --------------------------------------------------

         6 +DG1/prod/onlinelog/group_6.264.848858253

12 rows selected.

SQL> select * from v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIM

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------

         1          1        114   52428800          2 YES INACTIVE                989355 29-MAY-14

         2          1        115   52428800          2 YES INACTIVE                989368 29-MAY-14

         3          1        113   52428800          2 YES INACTIVE                988986 29-MAY-14

         4          1        116   52428800          2 YES ACTIVE                  989387 29-MAY-14

         5          1        117   10485760          2 YES ACTIVE                  990481 29-MAY-14

         6          1        118   10485760          2 NO  CURRENT                 990483 29-MAY-14

6 rows selected.

删除旧的日志组：

SQL> alter database drop logfile group 1;

Database altered.

SQL> alter database drop logfile group 2;

Database altered.

SQL> alter database drop logfile group 3;

Database altered.

SQL> alter system checkpoint;

System altered.

SQL> select * from v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIM

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------

         4          1        119   52428800          2 YES ACTIVE                  990548 29-MAY-14

         5          1        120   10485760          2 NO  CURRENT                 990566 29-MAY-14

         6          1        118   10485760          2 YES INACTIVE                990483 29-MAY-14

SQL> alter system switch logfile;

System altered.

SQL> select * from v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIM

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------

         4          1        119   52428800          2 YES INACTIVE                990548 29-MAY-14

         5          1        120   10485760          2 NO  ACTIVE                  990566 29-MAY-14

         6          1        121   10485760          2 NO  CURRENT                 991692 29-MAY-14

SQL> alter database drop logfile group 4;

Database altered.

SQL> select * from v$log;

    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARC STATUS           FIRST_CHANGE# FIRST_TIM

---------- ---------- ---------- ---------- ---------- --- ---------------- ------------- ---------

         5          1        122   10485760          2 NO  CURRENT                 991711 29-MAY-14

         6          1        121   10485760          2 YES INACTIVE                991692 29-MAY-14

SQL> select group#,member from v$logfile order by 1;

    GROUP# MEMBER

---------- --------------------------------------------------

         5 +DG1/prod/onlinelog/group_5.263.848858213

         5 +RCY1/prod/onlinelog/group_5.256.848858217

         6 +DG1/prod/onlinelog/group_6.264.848858253

         6 +RCY1/prod/onlinelog/group_6.257.848858259

调整recover area参数：

SQL> show parameter recover

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

db_recovery_file_dest                string

db_recovery_file_dest_size           big integer 0

recovery_parallelism                 integer     0

SQL> alter system set db_recovery_file_dest='+rcy1' scope=spfile;

System altered.

SQL> alter system set db_recovery_file_dest_size=2g scope=spfile;

System altered.

8、删除文件系统下的原数据文件

[oracle@aix211 ~]$cd /u01/app/oracle/oradata/prod/

[oracle@aix211 prod]$ls

control01.ctl  example01.dbf  sysaux01.dbf   system01.dbf   undotbs01.dbf  users01.dbf

[oracle@aix211 prod]$rm *

[oracle@aix211 prod]$ls

[oracle@aix211 prod]$

对于spfile参数可以存储在文件系统或ASM磁盘组上：

SQL> show parameter pfile;

NAME                                 TYPE        VALUE

------------------------------------ ----------- ------------------------------

spfile                               string      /u01/app/oracle/product/10.2.0

                                                 /db_1/dbs/spfileprod.ora

@至此，在AIX下迁移文件系统到ASM磁盘组工作完成，通过ASM存储，数据库读写性能得到了一定的提升。

附注：

Oracle官方文档提供的redo日志组迁移脚本：

Example 8-1 Migrating the online redo logs

SET SERVEROUTPUT ON;

DECLARE

   CURSOR rlc IS

      SELECT GROUP# GRP, THREAD# THR, BYTES, 'NO' SRL

      FROM   V$LOG

      UNION

      SELECT GROUP# GRP, THREAD# THR, BYTES, 'YES' SRL

      FROM   V$STANDBY_LOG

      ORDER BY 1;

   stmt     VARCHAR2(2048);

BEGIN

   FOR rlcRec IN rlc LOOP

      IF (rlcRec.srl = 'YES') THEN

         stmt := 'ALTER DATABASE ADD STANDBY LOGFILE THREAD ' ||

                 rlcRec.thr || ' SIZE ' || rlcRec.bytes;

         EXECUTE IMMEDIATE stmt;

         stmt := 'ALTER DATABASE DROP STANDBY LOGFILE GROUP ' || rlcRec.grp;

         EXECUTE IMMEDIATE stmt;

      ELSE

         stmt := 'ALTER DATABASE ADD LOGFILE THREAD ' ||

                 rlcRec.thr || ' SIZE ' ||  rlcRec.bytes;

         EXECUTE IMMEDIATE stmt;

         BEGIN

            stmt := 'ALTER DATABASE DROP LOGFILE GROUP ' || rlcRec.grp;

            DBMS_OUTPUT.PUT_LINE(stmt);

            EXECUTE IMMEDIATE stmt;

         EXCEPTION

            WHEN OTHERS THEN

               EXECUTE IMMEDIATE 'ALTER SYSTEM SWITCH LOGFILE';

               EXECUTE IMMEDIATE 'ALTER SYSTEM CHECKPOINT GLOBAL';

               EXECUTE IMMEDIATE stmt;

         END;

      END IF;

   END LOOP;

END;

/